Terry,
I'm not sure I understand what you are asking.
The E-LSA is a light sport, only that it has to be built exactly as the S-LSA Van has designed. (This is from the Van's web site) S-LSA is a Special LSA used for proving out a design. At this time, all subsequent RV-12 kits will be built and licensed as E-LSA's.
By insisting they are all built exactly as the original test article, regardless of who builds it, you or some company, they should all be exactly the same. (Except for the paint job.) By the same, that means instruments, wiring, engine, prop, etc.
What is unknown at this point is if they can be licensed as an E-AB, like the other RV's. Remember, if an E-AB meets the requirements of an LSA, it can be flown by an LSA pilot. That is how many of the Sonex's, Cub-a-likes, etc. are licensed and flown. No one seems to know if the FAA will bless the RV-12 as a 51% customer built kit. By licensing it as an E-LSA, the 51% rule does not apply.
Again, since all the aircraft are supposed to be identical to the proof of concept, they should fly the same, thus the reduced time.
Does that help?